Bismillahir Rahmanir Raheem
This is the phrase recited before each Surah of the Qur’an except for (Sūrat Al-Tawbah).The word Bismillah meaning in English is In the Name of Allah.
It is a phrase which means with the blessing of or with the guidance of, so Bismillah means with the blessing or guidance of the Allah.
According to a narration, the Prophet (صلى الله عليه وسلم) said:
Any important work that does not begin with Bismillah is imperfect.
Another version says:
Any important work that does not begin with Bismillah is devoid of Barakah.
Protection against the angel of Hell:
It is reported from Abdullah bin Mas’ood that: “Bismillahir Rahmanir Raheem” has 19 letters, and the angels of Jahannam are 19. Anyone who says Bismillahir Rahmanir Raheem will be protected against the angels of Jahannam.” (Tafseer Qurtubi)
Pul-e-Siraat on the Day of Judgement
The Holy Prophet (صلى الله عليه وسلم) has also said that when a believer will have to cross the Pul-e-Siraat on the Day of Judgement, and he will say “Bismillahir Rahmanir Rahim” then the flames beneath him will start dying down until Jahannam will cry out, ‘O believer, pass through quickly, your presence is causing my fire to die out.
THE STORY OF ALLAH’S FORGIVING A QAADHI
A certain Qaadhi passed away while his wife was expecting. The child was born. When he grew up, his mother took him to the madrasah. When he said “Bismillahir Rahman nir Raheem” in the presence of the teacher for the-first time, Allah Ta’ala lifted the punishment from his father. Allah Ta’ala said to Sayyidina Jibreel (Alaihissalatuwassalam): “O Jibreel, it is not like me to keep on punishing the father while his child remembers me with “Bismillahir Rahman nir Raheem” .
Bismillah before eating and drinking
‘Aishah (May Allah be pleased with her) reported: Messenger of Allah (ﷺ) said, “When any of you wants to eat, he should mention the Name of Allah in the begining, (i.e., say Bismillah). If he forgets to do it in the beginning, he should say Bismillah awwalahu wa akhirahu (I begin with the Name of Allah at the beginning and at the end).
Bismillah While Closing doors
To recite Bismillah while closing the doors and latching the lock.(Bukhari)The benefit of this is you & Your family will be protected by Allah through the barakah & blessing of his blessed name.
Bismillah Before Going to Sleep
Whoever says Bismillah 21 times before falling asleep, Allah tells the angels to write down a good deed for every breath he take.